Means for facilitating the tying and sealing of packages



F. KILLING March 11, 1930.

MEANS FOR FACILITATING THE TYING AND SEALING OF PACKAGES Filed Nov. 4,1927 wit/2 e55 e5 I Q 5 62 vrenfor 5;? I

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Patented Mar. 11 1930 UNITED STATES PATENT OFFICE FRITZ KILLING, OFCOLOGNE, GERMANY Application filed November-4, 1927, Serial No.

In contradistinction to the most usual man ner of tying packets intendedfor exportation which are tied up so that they cannot/be untied withoutmuch difficulty, certain packets 6 are sealed with the express purposeof facilitating as much as possible the untying there of with littletrouble and without injuring the binding cord. Thus, a seal for thebinding cord or string of a package comprises a 10 double headed bobbinconsisting of two sheet metal or cardboard discs connected by a shorthollow stem in which the beginning of the cord or the like is secured.The part of the cord lying at the right angular turning point at thecrossing between the first and second bindings, and also particularlythe free end of the cord are wound round the outside of the hollow stembetween the two discs several times, and are so retained in the narrowspace between them by a clamping action that the clamping action isreleased y twisting back the free endof the cord. In order to produce asheet metal cord seal which is suitable for exportation and from whichit is extremely diificult to release the cord without destroying theclosing means, the use of closing means has already been proposedconsisting of two sheet metal caps to be united, which partly serve thepurpose of supporting means in the tying operation itself in addition toserving as the turning point of the cord. The two disc or head shapedparts of this sheet metal seal are only united, however, at their outeredges bymeans of nippers after the knot is tied, as is usual when apackage is wrapped with cord and the closure effected by a knot.

According to the present invention the seal utilized in tying packagescomprises a bobbin consisting of two end discs connected by a centralhollow stem, said bobbin being used in the manner referred ,to forsupporting and stretching the tying means at the point of crossing ofthe first and second strands and for providing a releasable clampingconnection for the free end of the cord by simply twisting it around thestem. The bobbin, however, as distinguished from the abovementionedreleasable seal is so formed that when the central hollow rivet iscompressed 231,126, and in Germany November 13, 1928.

by means of a punch similar to an eyelet hole punch 'to imprison thesimple loop, formed by the turns around the stem and end of the cord,between the two discs a capsule connection is formed which ispractically impossible to break. In itself, however, the use ofbobbin-shaped closures for imprisoning a binding member around a centralcompressible hollow rivet has already been proposed. In'such previousclosures, however,

it is purely a matter of a. simple closing lug in the proper sense inwhich a simple siort wire limb serves as the binding member which whenfastened between the outer edges of the two sheet metal bobbins producesthe disadvantage that the closure can be undone as in the package sealfirst mentioned by applying an appropriate twisting force and can beremade unperceived.

Apart from the fact that the latter disadvantage is obviated by'the sealforming the subject of the present invention by forming notches in oneof the two discs of the bobbin in which the parts of the binding mediumpassing therefrom are immovably held, the present invention is concernedwith the common use of means serving to facilitate tying up and securingof the binding closure, whilst the bobbin facilitating the unitary tyingup operation is finally converted into a sheet metal plug seal.

Particular advantages accompany the production of the tied connection inthat all bothersome and lengthy operations of tying knots, such as wasformerly necessary in tyin a package with cord, are completely avoidedThe work and utilization of time necessary in tying a package is notonly very considerably-"reduced, but also the security of the sealis-much enhanced.

In the accompanying drawings,

Fig. 1 is a side view of the bobbin formed according to the invention,

Fig. 2 is a plan view corresponding thereto.

Fig. 3 is a sectional view on the line III III, Fig. 1,

Fig. 4 is a perspective view showing the manner of securing thebeginning of the cord in the bobbin,

Fig. 5 is a perspective view illustrating the closing operation in theproduction of the first turn of a package tie according to theinvention,

Fig. 6 shows in a similar manner the twisting operation in the finalstage in the tying operation,

Fig. 7 1s a perspective view showing how the seal is made by utilizingan eyelet or like punch,

Fig. 8 is an under plan view of the seal when made, and

Fig. 9 is an enlarged cross sectional elevation on the line IXIX, Fig.8.

The bobbin adapted for use in the tying operation and at the same timeforming the a plug of the ultimate seal consists of a sheet metal bodycomposed for example of two parts. The end disc or upper plate 1 of thisbobbin constituting the outer one in use has a smooth, annular, inturnedcurved edge 2 and also a central hollow stem or rivet 3 on the outerreduced end of which, advantageously of coniformshape, the lower part 4constituting the other'end plate is applied. This lower part 4 has acentral depressed portion 5 fornnng a conical sleeve engaging the stem 3and having an inturned annular flange or lip. The inner end of thehollow rivet 3 has an outwardly turned flange 6 so that the parts 3 and5 cannot be separated from one .another. The edge of the lower part isadvantageously provided with four cut-out portions or notches 7 and thetongues 8 formed between these are bent towards the upper plate at asteep angle.

In the tying operation the beginning of the cord is first of all formedinto a simple loop knot 10, as is shown in Fi 1, and is drawn tightaround the hollow rivet of the bobbin without any further knotting beingnecessary.

After the cord has been drawn around the package 11 in the usual manner,the end 13 of the first turn is so laid between the two end plates ofthe bobbin that the upper plate of the latter is on the outside. Thuswithout further trouble the two ends 12, 13 of the cord formed by thefirst turn around the package proceed from and lie under twodiametrically opposed notches 7 in the lower part 4 of the bobbin and soare maintained in correct position. After the cord has been turned atright angles to the first turn it can be drawn tighter or made slackeras desired. Thus the bend in the cord between the end part 13 of thefirst turn and the beginning of the secondturn is so laid over the loop10 that notonly is accidental untying of the loop prevented but reliefof the tension applied to the first turn is also prevented.

After the cord is pulled around the package to form the second turn,the'end part is again placed sideways between the two end plates andafter preliminary tensioning the free end is wound around one or moretunes between the plates, as shown at 16, Fig. 9. The uppermost windingis clam )GCl into frictional contact between the previous windings withsufficient force to ensure that they cannot loosen by themselves and thetension applied to the second turn of the cord around the package cannotbe relieved. In order to ensure that the seal thus made shall not bebroken or imdone as could easily be done at the present stage, and inorder to ensure against unperceived release thereof a punch similar toan eyelet hole punch is utilized to effectually seal the package. Asshown in Figure 7 a punch of known kind is placed with its lowersupporting matrix under "the lower part 4 of t e bobbin and with itsco-operating upper piston over the upper plate 1. When the punch isoperated in known manner the two plates are forced together and therivet is more or less collapsed thus causing the inturned flange 6 toroll up and the ends of the tongues 8 to spring in behind the curvedchannel 2 and be firmly held there as indicated in Figure 9. Byforcefully squeezin together the various coiled parts of the cor withinthe bobbin as can be attained with facilit and complete reliability bycompressing the parts of the bobbin by a punch, the two ends of the cordare much more firmly and reliably sealed and the seal is practicallycompletely unbreakable without leaving visible evidence that it has beentampered with. Also as shown in Figure 9, the collapsing of the rivetcauses the upsetting of its flanged end so that it will be bound withinand against the conical sleeve 5 in such manner as to lock the twomembers of the seal internally, in addition to the external lockingconnection between the tongues 8 and channel 2:

Instead of forming the rivet in one piece with the upper plate 1 it canbe formed in one piece with the lower part 4 provided with the notches.dependent unit in which the two end plates are so applied and held bysuitably swelling the ends that they can only slide inwards.

I claim 1. A package seal comprising a pair of clamping disks, and acollapsible hollow stem connecting said disks, one of the disks beinprovided with an inwardly directed margina retaining flange formin alocking channel, and the other locking disk having an annular series ofspaced tongues formin intervening cord passages, said tongues beinnormally directed toward the first-name disk and the free edges thereofbein adapted, upon the collapse of the collapsib e stem to be movedradially outward and interlocked with said locking channel.

2. A package seal co'mprisin a pair of clamping disks, and a collapsiblestem connecting and normally holding said disks in spaced relationshipso that portions of a tying cord may be passed about the stem,

Also the central rivet can be an inl one of said disks being providedwith an annular series of spaced tongues forming passages for the cordportions and adapted to be closed by engagement of the free edges of thetongues with the other disk when the collapsible stem is collapsed.

3. A package seal comprising a pair of clamping disks, one of said diskshaving a locking channel, a collapsible stein connecting said disks andnormally holding them in spaced relationship so that portions of across-tie cord may be passed about the stem,

and the other disk being provided with two pairs of tongues arranged atan angle to each other and forming cord receiving passages between them,said tongues being normally bent downwardly and outwardly at an angletoward the first-named disks and their free edges being adapted forradial outward movement and interlocking engagement with the lockingchannel of the first-named disk when the stem is collapsed.

4:. A package seal comprising a pair of spaced clamping disks, one ofsaid disks having an inwardly projecting retaining sleeve, and the otherot'saiddiskshaving aninwardly projecting collapsible stem projectinginto said sleeve and the free end 01' which is adapted to be collapsedtherein, one of the disks being provided with an annular series ofspaced tongues forming cord receiving grooves normally open at theirinner ends and adapted to be closed by the first-named disk upon thecollapse of the collapsible stem.

5. A package seal comprising a pair of spaced clamping disks, one ofsaid disks having an inwardly projecting retaining sleeve and the otherof said disks having an inwardly projecting collapsible stem fittingwithin said sleeve and the free end of which is adapted to be collapsedtherein on the closure of the seal, one of the disks being provided witha marginal retaining flange, an the other disk being provided with anannular series of tongues forming receiving passages open at their innerends and adapted to be closed by the other disk when the stem iscollapsed, said tongues being bent at a downward and outward angletoward the channel disk and the free edges thereof being adapted to bemoved radially outward and interlocked with the channel on the closureof the seal.

6. A package seal comprising a pair of spaced clampin disks, one havingan inturned Inargina retaining channel, and the other having an annularseries of spaced lapping tongues formin interveningcordreceivingpassages norms y open and adapted to be closed by the channel disk onthe closure of the seal, and a collapsible stem connesting the disks,saidtonguesbeingnormally bent outward and downward at an angle forradial downward movement to engage the channel disk and to be forcedinto the channel for interlocking engagement therewith when the stem iscollapsed.

7. A package seal comprising a pair of clamping disks, one of said diskshaving an inwardly projecting conical retaining sleeve, and the other ofsaid disks havin an inwardly projecting conical collapsigle stem fittedwithin said sleeve, the free edges of the sleeve and stem bein providedwith stop flanges, and said stem fieing ada ted to be collapsed withinthe sleeve, one 0? the disks being provided with a marginal retainingflange, and the other disk having an annular series of tongues formingcord passages normally open at their outer ends and adapted to be closedby the channel disk when the stem is collapsed, said tongues being bentdownwardly and outwardly at an angle toward the channel disk and theirfree edges being adapted for contact therewith and for outwardmovementinto interlocking engagement with the channel of the channeldisk when the stem is collapsed.

In witness whereof I affix my signature.

FRITZ KILLING.

